DarrellBuddy321

I just swapped over the itr intake manifold on my b16a2 and now when i start the car the idle gradually raises to 5k and stops around there. I dont know what is causing this. I checked all my vacuum lines and everything appears to be okay. My early problem was that i had to T fit my pcv line and the over vacuum line that is attached to the fuel rail since there was no fitting on the manifold.

da_dude

Check your throttle body. Happen to me once after I install my act clutch. Start it up and it was right at 5k rpm. Turn out there was a little rock keeping the throttle body open.

GSaura

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turb20_vtec &raquo;</TD></TR><TR><TD CLASS="quote">Check your throttle body. Happen to me once after I install my act clutch. Start it up and it was right at 5k rpm. Turn out there was a little rock keeping the throttle body open. </TD></TR></TABLE>

Damn! A rock jamming the throttle body? Good thing you caught it before it got sucked into your motor. That's freaking weird.

op: Have you checked your throttle cable?

DarrellBuddy321

i put slack on the throttle cable already and still nothing. Now the idle is fluctuating 3500-2400

95DxSi-R2

a very large vacuum leak, did u use new gaskets?

BackupNyou

Intake mani gasket!

fmrprojects

on the b16a2 they dont have a iat sensor on the intake manifold. on the itr manifold there is a iat sensor on the 1st or 2nd rnner. make sure you have a sensor in there to plug up the hole. if not there will be a big vacumm leak

ALLMOTOR CRX

it might a vacum leak get some carborator choke lequid from auto zone or kragen and spray some around the throttle body from where it mounts the whole square not inside it.. and also spray some on your intake manifold allround the head from where it mounts if theres a leak the idle will go up then it will rise again... if its not that then its your eacv its behind the manifold clean it up with brake cleaner it might off clought up the little valves inside there...

98civicEKex

Had the same problem with my skunk 2 manifold and 68mm throttle body on my built b16 a while ago, check for leaks if that isnt it (which it probably wont be) check that your map sensor on your throttle body has a good o-ring on it or it can cause it to be reading off the charts and trying to adjust by sucking air in, also if you are running a stock OBD II ecu your gonna have problems cause the ITR manifold and skunk 2 etc. all eliminate the dual butterfly valve to a single valve to alllow more airflow then your stock manifold, and if your running a stock obdII ecu your computer wont know how to handle the increase in air/fuel , and will kick the idle up thinking that your at wide open throttle whenyour really at idle. change to an OBDI ecu and run a air/fuel managerment system, just a few thoughts that might help you out that I did to eliminate the same problem I had. good luck.

Blk00EJ8

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98civicEKex &raquo;</TD></TR><TR><TD CLASS="quote">also if you are running a stock OBD II ecu your gonna have problems cause the ITR manifold and skunk 2 etc. all eliminate the dual butterfly valve to a single valve to alllow more airflow then your stock manifold, and if your running a stock obdII ecu your computer wont know how to handle the increase in air/fuel , and will kick the idle up thinking that your at wide open throttle whenyour really at idle. change to an OBDI ecu and run a air/fuel managerment system, just a few thoughts that might help you out that I did to eliminate the same problem I had. good luck. </TD></TR></TABLE>

First off, that's a ton of bad info

The GSR manifold is a 2 stage manifold, not a 2 valve manifold. It only has 1 valve, making the Type R or Skunk2 manifolds 1 stage with no valves.

Second off, switching to OBDI with management is only a workaround... you didn't solve your problem of a rough idle. So essentially you're still leaking somewhere.

I swapped manifolds on my GSR swap to a Skunk2 with a 68 mm Skunk2 throttle body (sound familiar?) and am running the OBD2 ECU. Air was leaking in past the throttle plate in the throttle body by way of the throttle plate rod (correct name anyone?). This was essentially a vacuum leak within the intake system so it was tough to diagnose, but that's what the problem was...

To OP... I would check to make sure you didn't forget to connect something stupid, because a small vacuum leak wouldn't cause a 5k idle. Maybe a 2-3k idle. A 5k idle would be indicative of a huge hole open like possibly a sensor missing.